Car dumper



Jan; 3, 1928.

A. F. CASE CAR DUMPER Filed March 26, 1926 4 Sheets-Sheet 1 Jan; 3,1928. 1,654,919

A. F. CASE cm BUMPER I Filed March 26, 1926 4 Sheets-Sheet 2 3511 EiliS.I 1,654,919

A. F. CASE CAR DUMPER Filed March 26, 1926 4 Sheets-Sheet s r ,Inuenfonv A. F. CASE CAR DUMPER Filed March 26, 1926 4 Sheets-Sheet 4 oilPatented Jan. 3, 1928'.

unireo s'rA'rEs PATENT orries,

ARTHUR F. CASE, OF cLEvELANn- OHIO, ASSIGNOYRVTO THE\VELLMAN-SEAVER-MOR- can COMPANY, or CLEVELAND, 01 150, ACORPOBVATION'OF onro.

GAR BUMPER,

Application filedMarch 26, 1926. Serial No. 97,572.

This invention relates to car dump'ers of the type having a carreceiving cradle which is turned about an axis todump the contents fromcar supportedby the cradle, and the invention has particular referenceto the car clamp mechanism which holds the car onto the cradlew ile thecar is being turned to dump the car and returned to car receivingposition.

to provide a clamp actuating mechanism which is simple in construction,easy to install and inexpensive to manufacture.

A further object is to provide clamp actuating mechanism capable ofwithstanding hard usage and which is so designed as to be actuated bythe cradle inits dumping move ments to positively apply and release theclamps;

A furtherobject is to provide clamp actu- I I sides of the track 5,- thefront side 7 being ating and holding mechanism which is mounted on thecradle near the pivotal axis I for movement independently of the cradleand which is operatively connected to the clamp on the cradle in suchmanner as to cause the clamp toengage the car and to hold the clamp inengagement with the car during the dumping operation and to dis-- engagethe clamp during the return movement of the cradle so that thelempty carin the cradle may be replaced by a loaded car.

lVith the above and other objects in view the, invention ma be said tocomprise a car dumper as illustrated in the accompanying l "The cradleis also provided with couuterweight cables 12each of which is attachedat one. end to the bottonti'ot the cradle adjaing-the cradle in apartially tilted position and Fig. 3 showing-the cradle fully tilted;

for discharging the contents of the 'car thereon; V

Fig. 4; is a side elevation of the clamp actuation n echanisnn'andf Fig.5 is a front elevation of the actuating mechanism shown in Fig. 4.

The present invention has for its object rations-0t the dumper, Fig. 1showing the cradle in car receiving position, F g. 2 show- J The presentinvention is illustrated in connection with a car dumper of the travel.ing'type in which the damper is mounted to travel upon suitable tracksand to receive the cars to be dumped from a railway track extendingbetween the tracks which support the dumper. The dumper consists of a.

supporting structure 1 which is mounted to travel upon tracks 2 whichextend along opposite sides of a railway track3, and mounted in thesupporting structure 1, there is a tilting cradle l provided withacarreceiving traclrh which is directly over the railwaytrack 3 when thecradle is in car receiving position suitablev t-ra'ckways being providedfor running the cars from the railway track 3 up onto the car receivingcradle.

The cradle is substantially U-shaped having upright sides 6 and 7' uponopposite somewhat higher than the side 6 and having an apron 8 overwhich the mater al lSCl1S charged as it falls from the car. The cradleof hoistingcables 10 which are attached to the bottom of the cradleadjacent the front" of the cradle and extend underneath the cradle, upthe outside of the rear side 6 over suitable guide sheaves to windingdrums 11.

cent the rear. side, extends over'suitable guide sheaves 12s at the topof the supporting structure 1 through a sheave 12*;carry- Jingacounterweight12flback over guide sheaves at the. tooloif the structure.down the v .L i

1 IYear si'de. and: across the bottom of the cradle where it isattached, as shown in F 3, the. counterweight serving to assist thehoisting cables during the beginning-0t the tilting movement and tolessen the momentum of the cradle after its center of gravity has beenmoved; to a point outside the pivotal axis aboutwhich the cradle tilts;

' The car: dumpcr, in sotairns ,abovejdcscribed,"tormsno part of thepresen invcntion, being'adumper' ot'an old and well Tknown type'inconnection with Whichthe segment being cnt No. 1,570,9l3, granted sitionexerts a null noon the littino; cable ends by a cross v p roller 28which acts as a COUIlLGT'WGlght tor present invention is illustrated,the present invention being applicable to various types of car dumpers.

The car clamp herein shown is substan tially the same as tnat disclosedin my Pat- January 26, 1926, the present invention being an improvementin the mechanism for actuating the clamp. The rear side 6 ot the cradleis provided on the'inner side thereo't with a vertical guideway 13 inwhich there is slidably mounted a head 14: which carries a car engagingclamp bar 15, which pivoted intermediate its ends at 16 to the head 34.and carries guide sheavesl? and 1111 at its opposite ends. The clamp bar15 is c lapted to extend across the top of the car, the forward end ofthe bar being adjacent the apron 8. A. holding cable 19 is anchored tothe cradle adjacent the bottom thereof and extends upwardly along theinner side of the apron 8 over the sheaves l8 and 17. do wn the innerside of the rear sidefi of the cradle and over guide sheaves 21 at thebottom of the cradle and on the front side thereof to a winding drum 22which is mounted on the shaft 9 A litting cable 23 is anchored to thecradle at the upper end of the rear side 6 thereof and extendsdownwardly around a sheave 25 mounted on the head 14 at the upper endthereof, extending upwardly from the sheave 25 over sheave 26st theupper end of the side 6 and downwardly over guide sheaves '21 to thewinding drum 22. The holding cable 19 and the lifting cable 23 are woundin opposite directions upon the drum 22 so that as one of these cablesis wound up, the other is paid out. move by gravity into car engagingposition and when the cradle is in car receiving potending to unwindthis cable from the drum 22 and to wind up the cable 19 on the drumshaft 9 and this lever consists of a pair of side bars 27 which areposition-ed upon opposite sides otthe drum 22 and which are'rigidlyconnected at their upper endsby a cross bar 27 and at their lower shaftwhich carries a heavy the'lever. The lever 27 is normally disconnecte dfrom the drum 22 and hangs in a position in which the counterweightroller 28 engages an abutment 29 on the supportingstructure 1. A secondlever 30 is pivoted intermediate its ends on a cross shaft 31 eX-tending between the side-members 27 of the lever 27 below the'drum 22.The lever carries a roller '32 at itslowcr end and has a gear segment 33at its upper end, the gear formed on the arc of a circle havingitscenter at the axisot the shaft 31. The gear segment 33 meshes with apinion as an axis,

The car clamp tends to 34L which is fixed to the drum 22 so thatmovement of the lever 30 about the shaft 31, causes rotation of thedrum22 in one direction or the other depending upon the direction ofmovement ot the lever. l Vhen the cradle is in upright position, the

,roller 32. ot the lever 30 is engaged by an outwardly extendingabutment 35 carried by the side 7 of thecradle and this abutment is ofsuch length that when the cradle'is in car receiving position, theabutment holds the lever 30 in a position such that the outer endportion of the segment 33 is in engagement with the pinion 34-. I f

The drum 22has fixed thereto a ratchet 36 which is adapted to be engagedby a pawl 37 which is pivoted intermediate its ends to the lever 27 atthe end thereof above the drum 22. The pawl 37 is normally held outratchet by a (0111 pression spring 39 interposed between the ofengagement with the rear end of the'pawl and the cross bar 27 at theupper end of the ratchet. The forward end ot the pawl. 37 carries aroller 40 which is adapted to be engaged by a cam 41 carried by thecradle the cam 41 being pivotec at its lower end zit-42 and beingyieldebly held at its upper end. by compression spring 4?) interposedbetween the upper part of the cam 41 and the cradle. I

l l lien the cradleis in car receiving })OSl tion, as shown in Fig. 1,the lower end of the lever 30 is pushed to its outermost position by theabutment 35 on the cradle and the drum 22 has been rotated in aclockwise, direction to wind up'the cable 23 sutiiciently to raise thecar clamp to the position shown in Fig. 1, the holding cable 19 havingbeen the cab e 28, rotates the drum 22 in countor-clockwise cnrcctioncausing the upper end, of the lever 30 to move outwardly and the roller32 to'move inward] with the abutment This movement oi the drum and drumoperating lever continues until the clamp comes into engagement with thetop;

of the car. "When the" cradle has moved from theposition shown in Fig.shown in Fig. 2, the cam 41 on the cradle will have swung with thecradle about the pivotal the rol er 40 carried by, the pawl 37. Theaction ot the cain ll is to tor-cc the'pawl 37 into engagement with theratchet 3b in opposition to the spring 39 which'norinally hold-s saidpawl out of engagement with the said ratchet, the cushioning spring 43oi': the cam permitting the cam to yield sufficiently to permit the pawl37 to ride down into engagement with the next tooth in the event that itshould engage with. the top of :1

axis 9 sufiiciently to engage with x to 1 to that cam 4:1. The cam ofthe pawl 37 with the ratchet '36 locks the counterweight lever 27 i tothe drum 22 and further'rotation of the cradle will cause the lower endofthe lever 27 to swing inwardly away from the abut-'- ment 29 whereuponthe weight ot' the roller 28 will act through-the lever 27 upon the drum22 tending to turn the drum in a countercloclrwise direction to wind upthe holding cable 19. The counterweight 28 then acts to apply tension tothe holdingcable 19 and toh'old the car clamp-down upon thev top of thecar and as the cradle moves to its fully tilted position, shown in 3,the \veight 28 will act through the lever 27 with agradually increasingleverage to apply the force to the car'holding clamp necessary to holdthe car upon its track 5 while in inverted position.- As the cradleswings back to car receiving position the counterweight will firstengage 'with the abutment 29 causing the lever 27 to remain stationaryuntil the cam 41 has moved out of engagement with the pawl 37'whereuponthe lever 27 will be freed from the drum. -During the final portion ofthe return movement of the cradle, the abutment 35 will engage with theroller 32 and swing the lower end of the lever 30 outwardly causing thegear segment 33 to travel inwardly and rotate the; pinion and drum22 ina clockwisedirect on,

'3,I1Cl unwinding cable l9 to hoist the car clamp from car engagingposition to thepositioninFig. 1 so that the'empty car is free totravelout of the cradle and a loaded car may be run into the cradle inits place.

Having described myinv ntion, I claim:

1. A car dumper comprising a supporting winding up the cable 23structure, a car receiving cradle mounted for tilting movements on saidstructure, a movable car clamp carried by the cradle, and a movableactuating member mounted on, a

fixed support, said-member being operatively connected team clamp, saidactuating member being so mounted "with respect to the cradle as to beactuatedby the cradle in its tilting" movements to operate the clamp i2. car dumper'comprisinga supporting structure, a car receiving cradlemounted'for tiltingmovements on said structure, a mov able car clampcarried by the cradlefa counterweight lever having" a stationary pivot,means for automatically establishing a connection between thecounterweight lever and the clamp upon a predetermined tilting movementof the cradle to cause the counterweight lever to exert a holding actionon the clamp, and vmeans operated by the cradle in itstiltingimoveinents for moving receive a car, m'eans'tor turning th ecradle,

the clamp, to and from engaging position.

v 3-. In a car dumper, 'a cradle adapted to a movable car clamp on thecradle, a counterweight lever having a statlonary pivot,

means operable independently of the counupon a predetermined movementthereof for connect ng said lever to the clamp to cause thecounterweight lever to exerta' holding action on the clamp.

14. In a car dumper, a c adle adapted to re ceive .a car, means forturningthe cradle, a movable car clamp on the cradle, a counterweightlever having a stationary pivot, means operable independently ofthecounterweight lever" and actuated by the cradle in its turningmovements for shiftingthe clamp, andmeans operated by the cradle upon apredetermined movement thereof for connecting said counterweight leverto said clamp shifting means to cause thecounten weight to exert aholding, action on the clamp. f r i i In a car dumper, a cradle adaptedto receive a car and mounted to turn about a horizontal axis to dump thecontents from the car, a movable car clamp on the cradle, means formoving the clamp including a winding drum mounted at the pivotal axisotthe cradle, and a cable connecting the drum and clamp, and meansoperating autoot the cradle for turning the drum in a direction to applythe clamp.

6. In a car dumper, a cradle adapted to receive a car and mounted to.turn. about a horizontal axis to dumpv the contents from the car, amovable car clamp on the cradle,

the drum in the opposite direction togrelease the clamp. a i '7. Ina cardumper, a cradleadapted to receive a car and mounted to turn about ahorizontal axis to dump the contents froln the car, a movable car clampon the cradle,

means for moving the clamp includinga" 'winding drum mounted at thepivotal axis ot'the cradle and a cable connecting the drum and clamp,adeverpivoted adjacent rection to apply the clamp, and during the ire'ti'irnmovement ofthe cradle for turning matically durin thesdumpingmovements the axis of the cradle, means for operatively connecting thelever to the drum, and means movements of the-cradle;

Tstructure, acar receiving cradle m'ounted on said structure for tiltingmovements to dump the "contents of a car thereon, a movable carclampmounted 'onthe cradle, a v

for o eratin said lever durin the dumpin l b c. 4 t5 S.A car dumper'comprising a supporting clamp operating drum mounted on a stationaryshalt, a cable, connecting said drum and clamp, and means for actuatingthe drum.

9. A car dumper comprising a supporting structure, a car receivingcradle mounted on said structure for tilting movements to dump thecontents of a car thereon, a movable car clamp mounted on the cradle, aclampoperating drum mounted on a stationary shaft, a cable connectingsaid drum and clamp, and means adapted'to be operated by the cradle inits tilting movements for rotating the drum. r

10. A'car dumper comprising a supporting structure, a carreceiving-cradle mounted in said structure for turning i'novements abouta horizontal to dump the contents of a car thereon and to return. toitsoriginal position, a counterweight leverpivoted to turn about a fixedaxis, a car clamp carried by the cradle, means for moving the clamps toand from car engaging position, andv means for operatively connectingsaid counterweight lever to said clan'ip upon a predetermined' tiltingmovement of the cradle.

11. A car dumper comprising a supporting structure, a car receiving.cradle mounted in said structure for turning movements about ahorizontal axis to dump the contents of a car thereon and to return toits original position, a counterweight lever pivoted to turn about afixed axis, a car clamp carried by the cradle, to and from car engagingposition, and means for operatively connecting said couuterweight leverto said clamp'upon a predetermined tilting movement of the cradle, saidcounterweight lever being so moimted as to act upon the clamp with.increasing leverage as the cradle approaches the limit of its dumpingmovement.

12. A car dumper comprising a support structure,a car receiving cradle1nounted in said structure, for turning movements about a horizontalaxis to dump the contents of a car thereonand to return to its originalpositlon, a counterwelght lever pivoted to turn about a fixed axis, acar clamp carried by the cradle,-meanstor operatively connectmgthecounterweight lever to the clamp during the dumping movement of thecradle and for disconnectingthe same during return movement, and meansoperated by th cradle in its dumping and return movements for shiftingthe clamp to and from car engaging position. v v V 13. Aocar dumpercomprising a supporting structure, a car receiving cradle mount-' ed insaid structure for turning movements about a horizontal axis tents of acar thereon and to return to its original position, a counterweightlever pivoted toturn about a fixed axis, a car clamp .carriedby thecradle, means for operatively 'cradle and mg return movement, and meansoperated means for moving the cl amps.

to dump the, con? connecting the counterweight lever to the clamp duringthe dumping movement of the tor disconnecting the same durby the cradleduringits dumping and return movements and before and after-theoperation of the counterweight lever for shifting the clamp to carengaging-position, and out of car engaging position. 1%. A cardumpercomprising a supporting structure, a car receiving cradle mounted totilt on said supporting structureto dump the contents of a car thereon,a-car clamp on the cradle mounted for movement lay-gravity to carengaging position, clamp actuating means including lever adjacent thecradle and connectedto. the clamp, a member on said cradle whicheuga'ges the lever when said cradle is in, car

receiving position to hold the clamp in releasing position and whichmoves out of engagement with said lever when the cradle is tilted torelease the clamp and permit. it

to move to car holding position, and means for retaining the clamp incar holding position during the dumping voperation.

15. A car dumper comprising a support ing structure, a car receivingcradle mounted for tilting movements on said supporting structure, amovable car clamp on said. cradle, a drummounted on a stationary shatt,cables oppositely wound on the drum and operatively connected to. theclamp, means operated by the cradle in its tilting movements foroperating the drum.-first in mounted one direction and thenin' the otherto move I the clamp into and out of car engaging position, acounterweight normally disconnected from the drum and means controlledby the cradle in'its tilting movements for connecting saidcounterweightto the drum and disconnecting the same therefrom.)

15. A car dumper comprising a supporting structure, a carreceiving'cradle mounted to tilt .on said supporting structure to dumpthe contents of a car thereon and to return to its original position, acar clamp on the cradle mounted for movement by gravity to car, engagingposition, a'drum mounted on a statlonary shait,l1ft1ng and holdingcables oppositely, wound onth'e drun'i and connected with said clamp, aleverpivoted at the axis of the drum, a counterweight carried by saidlever, means adapted to be operated by the cradle in its tiltingmovements for connecting said lever and drum, means for limiting thepivotal movement of said'lever, and means mounted on said lever andadapted to be actuated by the cradle for operating said drum.

17QA car dumper comprising a supportto its original position, a carclamp onthe ting structure, a car receiving cradle mounted a til cradlemounted for movement by gravity to car engaging position, a drum mountedon said cradle adjacent theaxis thereof, lifting and holding cablesoppositely wound on the drum and connected with said clamp, a lever 1pivoted at the axis of the drum, a counterweight carried by said lever,means adapted to be operated by the cradle in its tilting movements forconnecting said lever and drum, an abutment on the supporting struc turefor limiting the pivotal movement of the lever, a member movably mountedon the lever and operatively connected to the drum to actuate the same,and an abutment on'th'e cradle adapted to engage said movably mountedmember to move the same and actuate the drum in a direction to lift theclamp. v

18. A car dumper comprising a supporting structure, a cradle mounted forlateral tilting movement on the structure, a car clamp mounted forvertical movement onone side of the cradle and movable actuating membersmounted adjacent the opposite side of the cradle and adapted to beactuated by the cradle in tilting, said being operatively connected tothe clamp.

19. A car dumper comprising a supporting structure, a car receivingcradle mounted for tilting movements, on said structure, a movable carclamp on the cradle, a winding drum mounted at the pivotal axis of thecradle, holding and releasing cables con necting thedrum and clamp andWOllliCl'lli opposite directions onthe drum, drum actuating means on thesupporting structure adapted to be operated by the cradle in its tiltingmovements to shift the clamp into' and out of car engaging position, aclamp holding counterweight normally disconnected from the drum, andmeans operatedby the cradle during its tilting movements for connectingthe counterweight tothe drum and disconnecting the same therefrom.

20. A car dumper comprising a supporting structure, a car receivingcradle mounted for tilting movements onsaidstructurc,

a movable car clamp on the cradle, a winding drum mounted at the pivotalaxis of the cradle, holding and releasing cables connectmg the drum andclamp and wound in opiosite directions on the drum drumactu- I ratchet;

ating means on the supporting structure adapted to be operated by thecradle in its tilting movements to shift the clamp into and out of carengagingposition, a counter,-

weight arm pivoted at the axis of the drum tilting actuating members andnormally disconnected from the drum, and means operated by the cradleduring its movements for connecting the counterweight arm to the cradleand disconnecting the same therefrom.

21. A car dumper comprising a supporting structure, a car receivingcradle mounted for tilting movements on said structure, a movable carclamp on the'cradle, a winding drum mounted at the pivotal axis of thecradle holding and releasing cables connecting the drum and clamp andwound in opposit-e directions on the drum, a counter; weight arm pivotedat the axis of the drum and normally disconnected from the drum, a leverpivoted on said arm, an actuating connectionlbetween the lever :anddrum, an abutment on the cradle engageable with said lever to actuatethesame, and means carried by the cradle for connecting'jsaidcounterweight arm to the drum and for disconnecting the same therefrom.

22. A car dumper comprising, a supportstructure, a car dumping cradlemounted on said structure to tilt laterally about a horizontal axis atone side of said structure- .mounted on said shaft, a car holding clampon the cradle mounted to move by gravity to car engaging position,holding and lifting cables extending from the clamp to the l drum andwound in opposite directions on the drum, a counterweight arm pivotally'suspended from said shaft, an abutment on the structure limiting theoutward movement of the arm, a pinion'fixed to the drum, a lever pivotedto the counterweight arm and'provided at its upper end with a gearsegment meshing-with said pinion, an abut ment on the cradle whichengages said lever during the initial part of the "dumping movement ofthe cradle and during the latter part'of the return movement thereof, a

ratchet on the drum, a pivot carriedby the] counterweight 'arm, meansfor yieldably holding the pawl out of engagement with the ratchet, and acam carried by the cradle V and engageable with the pawl after apredetermined movement of the cradle for movmg the pawl into engagementwith the In testimony whereof, I hereunto aflix my signature.

ARTHUR r. CASE.

